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CVE-2026-32259

ImageMagick has a possible stack buffer overflow in sixel encoder

Published: 3/12/2026 Last updated: 3/13/2026 Reserved: 3/11/2026

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-16 and 6.9.13-41, when a memory allocation fails in the sixel encoder it would be possible to write past the end of a buffer on the stack. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

CNA assigner: GitHub_M (a0819718-46f1-4df5-94e2-005712e83aaa) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 6.7 Medium CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Opam packages affected (2)

conf-libMagickCore ocsigen-start

Products affected (1)

Product Vendor Version
ImageMagick ImageMagick < 6.2.9200.25273

References (1)